Driving mechanism for power-tools.



E. SAULER.

DRIVING MECHANISM FOR POWER. TOOLS.

APPLICATION FILED MAR. 31, 1914.

7 1,130,543, Patented Mar. 2, 1915.

war 1420mm 'HE NORRIS PETERS CO5. PH Om-LITHQ- WASHINGTON. D. C.

EDWARD SAULER, OF ST. EDWARD, NEBRASKA.

DRIVING MECHANISM FOR POWER-TOOLS.

To all whom it may concern:

Be it known that I, EDWARD SAU'LER, citizen of the United States, residing at St. Edward, in the county of Boone and State of Nebraska, have invented certain new and useful Improvements in Driving Mechanism for Power-Tools, of which the following is a specification.

The present invention relates to new and useful improvements in driving mechanism such as are employed in operatively connecting woodworking and metal working tools to an electric motor or some other power source.

The principal object of my invention is to provide a driving mechanism which may be employed in operatively connecting a tenon auger or any other woodworking tool to any standard form of vertical drill press, such as is employed in metal and woodworking.

A further object is to provide a driving mechanism consisting essentially in a twopart driven shaft, the sections of which are connected by a universal joint, one of the sections being equipped with a train of gears and a vertical shaft which may be received within the chuck of a vertical drill press, the other section being provided with an adjustable head for attaching various types of woodworking or metal working tools to the mechanism.

An object of equal importance with the foregoing is to slidably connect the head member which receives the woodworking tool to the main driving shaft so that the operator may by manipulating a lever move the tool toward or away from the work stock, thus making it possible to shift the metal or wood which is being worked on, without requiring the disconnection of the tool from the power source.

Another object is to provide a dr1v1ng mechanism of the character described which is constructed with such regard to proportion, number and arrangement of parts that it may be cheaply manufactured, w1ll be durable and efiicient in its action and will be readily and conveniently employed in attaching any standard form of metal or woodworking tool to a power drill press of the vertical type.

The above and additional objects are accomplished by such means as are illustrated in the preferred embodiment of'the accompanying drawings, described in the follow- Specification of Letters Patent.

Patented Mar. 2, 1915.

ing specification, and then more particularly pointed out in the claims which are appended hereto and application.

With reference to the drawings, wherein there has been illustrated the preferred embodiment of the invention and throughout the several views in which the same reference numerals designate corresponding partsFigure 1 is a side elevation of the mechanism showing the various elements thereof in operative assembled relation. Fig. 2 is a top plan view illustrating in detail the base casting which is detachably secured to the table of a drill press. Fig. 3 1s a longitudinal section taken through the tool receiving head and adjacent portion of the main drive shaft illustrating in detail the manner in which the tool receiving head is adapted to be projected or retracted. Fig. 4: is a vertical section taken through the supporting tripod, the upper end of which carries a bearing for the main drive shaft. Fig. 5 is a detail view of one form of plug member which is employed in connecting certain types of tools to the tool receiving head. Fig. 6 is a detail View of a second form of plug member employed in connection with the tool receiving head. Fig. 7 is a detail perspective view illustrating specifically the beveled gear and associated shaft by means of which the main drive shaft of the mechanism may be operatively connected to the chuck of a vertical power drill press.

Before proceeding to the description of the drawings, I desire to explain that while I have designed my invention with particular reference to providing means whereby a tenon auger, such aS is employed in a wheelwright or blacksmith shop for trimming spoke tenons, may be operatively connected to and driven by an ordinary power drill press, have illustrated it and will hereinafter describe the invention in that connection, it may nevertheless be efliciently emform a part of this ployed in operatively: connecting almost any ing the drive shaft to the power drill press indicated at 13. The main drive shaft 10 is of ordinary construction, being formed from a suitable length of steel tubing or a steel rod, if preferred, and is journaled at its outer terminal in a cylindrical bearing 1 which is pivotally carried at the upper end of a supporting rod or standard 15. This rod member 15 is vertically adjustable through a tube 16, the lower end of which carries three supporting legs 17 18 and 19. A set screw indicated at 20 is of course provided for securing the member 15 in its adjusted position. In attaching the bearing 14: to the upper terminal of the member 15, I employ a collar 21 formed from a strip of resilient metal, the terminals of which are bent to produce a pair of ear members 22. These ear members 22 are apertured to receive a pivot bolt 23, by which the collar is pivotally connected to the member 15 so that the angle the shaft 10 bears to the horizontal may be quickly varied. As a means for holding the collar 21 in fixed position on the bearing 14-, I have provided a set screw 2% as best shown in Fig. 3. The terminal of the shaft 10 extends through the bearing 1 and at its extreme end is squared as indicated at 25 in Fig. 1, particularly. This squared portion 25 of the main drive shaft is designed to receive the tool head 12. For this reason, therefore, the tool head 12 is formed with a cross sectionally squared socket 26 which receives the member 25 and is rotatable therewith. It will be seen upon reference to Fig. 3 particularly that the head member 12 freely receives the squared terminal of the drive shaft and that it may therefore be adjusted longitudinally thereon for the purpose of projecting or retracting the tool which has been attached to the head member.

As a means for enabling theoperator of the tool to easily and readily project or retract the tool head with respect to the squared portion 25 of the drive shaft, there has been provided an adjusting lever 27. This member 27 is preferably formed from a metallic bar and is apertured at its lower end to receive a pivot pin 28 which passes through the apertured ears 29 formed on a collar 30 which embraces the enlarged portion 31 formed on the drive shaft 10. This member 30 is freely received within a groove 32 which is formed in the enlarged portion 31. It will thus be seen that the member 30 is not intended to rotate with the shaft 10. The lower terminal of the adjusting lever 27 is provided with a plurality of spaced apertures 33 which are adapted to receive a pivot pin 34: for connecting the adjacent terminal of the link 35 to the lever.

- This link 35 is connected at its forward terin the annular groove 38 of the enlarged portion of the head indicated at 39. Upon reference to either Figs. 1 or 2 it will be readily seen that the forward or rearward movement of the lever 27 will act to proj set or retract the tool receiving head 12.

In regard to the tool receiving head it may be well to explain that it is adapted to receive almost any type of woodworking or metal working tool, but is intended to be used particularly in connection with tenon angers, and is for this purpose equipped with a terminal socket and an attaching plug 40. The attaching plug i0, illustrated in Fig. 5, is provided with a squared shank 41, a stop collar 422 and a reduced squared eX- tension 43. The form of plug shown in Fig. 6 is similar to the member 40 with the exception that its reduced terminal, indicated at 44:, is threaded. It is necessary to provide these two forms of plugs since tenon angers of one type are provided at their base portion with squared sockets, whileangers of another type are provided with threaded bores in theirbase members. screw indicated at 4L5 is provided for securing the plug members in position at the ter minal of the tool head 12, as shown in Fig. 1.

Coming now to the description of the train of gears and associated elements which are employed in operatively connecting the drive shaft 10 to the power drill press 13, reference will be had particularly to Figs. 1 and 2. The terminal of the shaft 10 is provided with a universal joint 46, the member 17 of which is adapted to receive the stub shaft on which the bevel gear 4:8 is keyed. This stub shaft, indicated at 19 is j ournaled in the bearings and 51 which are formed integrally with a base casting 52. A cotter pin or equivalent device 53 is of course passed through the member 47 for detachably connecting these members sa that they will rotate with each other.

Aset- The base casting 52 includes a body plate 51 54s, a substantially U-shaped bearing bracket 55, the bearings 50 and 51 and a V-shaped guard member 56. It will be seen that the bevel gear 1-8 is j ournaled between the adjacent terminals of the bearings 50 and 51 and is positioned for rotation in the guard member 56. he side portions of the U-shaped member 55 are bent intermediate their lengths so that the bight portions of the members are spaced above the base plate 5 1, as best shown in Fig. 1. At the junction of the bearing 51 with the plate 54 is formed a cup-shaped bearing 58 which rises vertically from the plate and is designed to receive the lower terminal of a vertically dis posed shaft 59. This member 59 is adapted to be directly connected to the chuck 60 of the power drill and, forming as it does one of the important elements of the invention, has been illustrated in Fig. 7. Referring therefore to this figure it will be seen that the one terminal of the shaft 59 is rounded as at 61, while the other terminal is squared, as indicated at 62. The terminal 61 is, when the mechanism is assembled, disposed in the bearing cup 58, while the squared terminal 62 is applied to the chuck 60 of the power drill press when the operator clesires to connect the tool head 12 to the drill press. On the shaft 59 and intermediate the length thereof is keyed a bevel gear 63 which is adapted to mesh with the bevel gear 48, thus transmitting the power from the drill press to the main drive shaft 10.

It will be apparent from the foregoing description that the driving mechanism may be quickly attached to any ordinary form of power drill press for operating a tenon gear or any other similar tool. It will also be noted as a matter of importance that the tool receiving head 12 is longitudinally adjustable on the squared terminal 25 of the drive shaft, thus making it possible for the operator to project the tool into engagement with the workpiece or to retract the tool while the workpiece is being shifted.

Having thus described the invention, what I claim as new is:

l. A driven tool adapted for connection to a power drill press including a drive shaft having a universal joint, means carried by one terminal of the shaft for operative connection to the drill chuck of said drill press, a tool chuck reciprocally mounted upon the other end of the shaft, and adjustable means for supporting said latter end of the shaft.

2. A driven tool adapted for connection to a power drill press including a drive shaft having a universal joint, means carried by one terminal of the shaft for operative connection to the drill chuck of said drill press, a tool chuck reciprocally mount ed upon the other end of the shaft, and means for reciprocating the tool chuck.

3. A tool driving mechanism adapted for connection to a power drill press including a driven shaft, means carried by one end of the shaft for operative connection to the drill chuck of said drill press, the opposite end of the shaft being squared, a tool chuck having a squared socket for slidable engagement over the squared end of the driven shaft, collars mounted upon the driven shaft and tool chuck and free to turn on such elements but held against longitudinal movement with respect thereto, a hand lever pivotally connected to one of the collars, and a link pivotally connecting the other collar and an intermediate portion of the hand lever.

4. A power transmitting mechanism for tools including a drive shaft adapted for connection with the tool to be driven, a

plate adapted for connection to the bed of a power drill press, an upwardly and outwardly directedbracket carried by the plate, a compound bearing carried by the bracket and plate and adapted to receive one end of the drive shaft, a second shaft journaled in the hearing at right angles to the first and having a squared end for engagement with the drill chuck of said drill press, and beveled gears carried by the shafts and meshing with each other.

In testimony whereof I aflix my signature in presence of two witnesses.

EDWARD SAULER. [L. s.] Witnesses: I AUBREY A. SMITH, ROBERT J. HARRIS.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. 0. 

